The book contains 19 historical studies on northern navigation and shipbuilding, including those related to events at plant No. 402 - as Sevmash, the famous military-industrial complex located in Severodvinsk (Molotovsk), used to be called. The names of the sections of the book speak for themselves: "And tomorrow there was a war," "Flaming miles," "With the energy of creation," "Black Ocean," "Stories of the Arctic Circle."